201220320001 has 4 divisors (see below), whose sum is σ = 202383443412. Its totient is φ = 200057196592.

The previous prime is 201220319981. The next prime is 201220320029. The reversal of 201220320001 is 100023022102.

201220320001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99981807601 + 101238512400 = 316199^2 + 318180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201220320001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201220320071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581561446 + ... + 581561791.

It is an arithmetic number, because the mean of its divisors is an integer number (50595860853).

Almost surely, 2^201220320001 is an apocalyptic number.

It is an amenable number.

201220320001 is a deficient number, since it is larger than the sum of its proper divisors (1163123411).

201220320001 is a wasteful number, since it uses less digits than its factorization.

201220320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163123410.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 201220320001 its reverse (100023022102), we get a palindrome (301243342103).

The spelling of 201220320001 in words is "two hundred one billion, two hundred twenty million, three hundred twenty thousand, one".